Bently 330730-040-01-00

Description

3. Technical Specifications

Cable Core Parameters

• Cable Type: Shielded, twisted-pair extension cable, specifically optimized for eddy-current proximity probe signal transmission (0–15 V DC, low-noise).
• Length: 40 feet (12.19 meters) fixed length, ensuring consistent signal performance without the need for splicing (which introduces signal loss).
• Conductor Configuration: 4-conductor design with stranded tinned copper (22 AWG per conductor) for enhanced flexibility and corrosion resistance. Conductors are arranged in two twisted pairs (one pair for power, one pair for signal) to minimize crosstalk.
• Conductor Resistance: ≤12 Ω per 100 feet (30.48 meters) at 25°C, ensuring minimal voltage drop across the 40-foot length—critical for maintaining stable probe power and signal clarity.
• Insulation Material: High-temperature cross-linked polyethylene (XLPE) with a dielectric strength of ≥2000 V AC (1 minute), providing robust electrical insulation and resistance to thermal aging.
• Shielding: Triple-layer shielding system—100% tinned copper braid (95% coverage) + aluminum foil (100% coverage) + drain wire—delivering EMI/RFI attenuation of ≥70 dB at 100 MHz.
• Jacket Material: Oil-resistant, flame-retardant polyurethane (PU) with a Shore hardness of 85±5 A, offering superior abrasion resistance, flexibility, and chemical resilience.

Connector Specifications

• Connector Type: Bently proprietary bayonet connectors (male on both ends), designed for seamless mating with 3300 Series proximity probes (e.g., 330703, 330709) and signal conditioners (e.g., 330400-02-05).
• Contact Material: Gold-plated phosphor bronze (0.2 μm plating thickness), ensuring low contact resistance (≤5 mΩ) and long-term resistance to oxidation and corrosion.
• Ingress Protection (IP) Rating: IP68 when mated (per IEC 60529), protecting against dust ingress and prolonged water submersion (up to 2 meters for 48 hours).
• Latching Mechanism: Bayonet “twist-lock” design (1/4-turn engagement) with a positive click, ensuring vibration-resistant mating—preventing accidental disconnection in high-vibration environments (e.g., mining crushers).

Environmental & Mechanical Ratings

• Operating Temperature Range: -45°C to +125°C (cable jacket and conductors); -35°C to +95°C (connectors)—suitable for extreme industrial environments, from arctic mining sites to high-heat refinery process units.
• Vibration Resistance: Compliant with IEC 60068-2-6 (15 g acceleration, 10–2000 Hz) for both cable and connectors, ensuring no signal disruption during machinery operation.
• Shock Resistance: Compliant with IEC 60068-2-27 (75 g shock, 6 ms duration), withstanding transient impacts during installation, maintenance, or machinery start-up.
• Chemical Resistance: Jacket and insulation resist industrial oils (mineral oil, hydraulic oil), greases, solvents (ethanol, methanol, diesel), acids (dilute HCl), and saltwater—ideal for offshore platforms and chemical plants.
• Flame Retardancy: Compliant with UL 94 V-0 (vertical flame test) and IEC 60332-1 (horizontal flame test), self-extinguishing within 5 seconds to reduce fire risk.

Electrical Performance

• Signal Attenuation: ≤0.3 dB at 15 kHz (across 40 feet), ensuring minimal degradation of high-frequency eddy-current signals—critical for detecting bearing wear harmonics (up to 15 kHz).
• Capacitance: ≤80 pF per foot (between conductors), preventing signal distortion from capacitance buildup (a common issue with generic cables that skews low-voltage probe signals).
• Inductance: ≤0.4 μH per foot (per conductor), minimizing inductive interference from nearby high-voltage power cables.

4. Functional Features

• Superior Signal Integrity for Precision Measurements: The triple-layer shielding (copper braid + aluminum foil + drain wire) and twisted-pair conductors ensure EMI/RFI rejection of ≥70 dB at 100 MHz—eliminating interference from motors, variable frequency drives (VFDs), and power cables. Low signal attenuation (≤0.3 dB at 15 kHz) preserves the accuracy of ultra-subtle measurements, such as 0.1 μm radial vibration (bearing wear) and 0.001 mm axial displacement (thermal expansion), even across the 40-foot length.
• Plug-and-Play 3300 Series Integration: Pre-terminated with Bently’s proprietary bayonet connectors, the cable requires no on-site crimping, soldering, or calibration. The “twist-lock” latching mechanism ensures secure, error-free mating with 3300 Series probes and conditioners—reducing installation time by 80% compared to generic cables (which require custom termination and signal testing).
• 40-Foot Length for Versatile Deployment: The 40-foot (12.19-meter) length is optimized for industrial environments where probes and conditioners are separated by significant distances—such as turbine halls (probes on turbine casings, conditioners in control rooms 30+ feet away) or refinery compressor skids (probes on compressors, conditioners in remote cabinets). This eliminates the need for daisy-chaining shorter cables (which increases failure points and signal loss).
• Extreme Environmental Resilience: The cable operates reliably in temperatures from -45°C to +125°C, withstands 15 g vibration and 75 g shock, and resists chemicals, oil, and saltwater. IP68-rated mated connectors protect against dust and water submersion—making it suitable for harsh environments like offshore drilling platforms (saltwater exposure), steel mills (dust and heat), and arctic oil refineries (low temperatures).
• Durable Construction for Long Service Life: The oil-resistant PU jacket (Shore 85 A) resists abrasion, tearing, and chemical degradation, ensuring a service life of 10+ years in industrial settings. Tinned copper conductors and gold-plated connectors prevent corrosion—critical for humid environments (e.g., coastal petrochemical plants) where generic cables fail within 3–5 years.
• Flame-Retardant Design for Safety Compliance: UL 94 V-0 and IEC 60332-1 flame retardancy ratings reduce fire risk in facilities handling flammable materials (e.g., refineries, chemical plants). The self-extinguishing jacket prevents fire spread, aligning with global safety standards (e.g., NFPA 70 for electrical safety and ATEX for hazardous areas).

5. Application Scenarios

• Power Generation Industry (Turbine & Generator Monitoring):
  • Deployed in coal-fired, natural gas, and nuclear power plants to connect 3300 Series proximity probes (mounted on steam/gas turbine casings) to signal conditioners (housed in control rooms 30–40 feet away). The cable’s EMI shielding rejects interference from turbine generators and power transformers, ensuring accurate measurement of rotor vibration (preventing rotor rub) and axial displacement (tracking thermal expansion). IP68 connectors resist steam and oil contamination in turbine halls, while the 40-foot length eliminates the need for custom cable runs.
• Oil & Gas Industry (Compressors & Offshore Rigs):
  • Used in onshore refineries and offshore drilling platforms to connect probes on centrifugal compressors (mounted on skids) to conditioners in remote control cabinets. The oil-resistant PU jacket withstands exposure to refinery oils and solvents, while saltwater resistance ensures durability on offshore rigs. Triple-layer shielding rejects EMI from pump motors and VFDs, preserving signal accuracy for detecting compressor impeller wear and seal failure. ATEX-compatible materials (when paired with Zone 1 probes) support use in explosive refinery environments.
• Mining Industry (Crushers & Conveyors):
  • Applied in iron ore, coal, and copper mines to connect probes on jaw crushers, cone crushers, and conveyor drives (mounted on machinery frames) to conditioners in control rooms 30–40 feet away. The cable’s abrasion-resistant jacket withstands damage from mining debris, while vibration resistance (15 g) ensures no signal disruption during crusher operation. IP68 connectors prevent dust ingress—critical for maintaining signal integrity in dusty mining environments where generic cables fail due to clogging.
• Petrochemical Industry (Reactors & Agitators):
  • Integrated into ethylene crackers, polymer reactors, and process agitators to connect probes on agitator shafts (mounted on reactor vessels) to conditioners in remote cabinets. The cable’s chemical resistance (to ethylene, propylene, and solvents) ensures durability, while the wide temperature range (-45°C to +125°C) supports operation in both cold storage and high-heat reactor jackets. Low capacitance (≤80 pF/foot) prevents signal distortion, ensuring accurate monitoring of agitator vibration (preventing bearing failure and reactor shutdowns).
• Marine Industry (Large Diesel Engines):
  • Installed on LNG tankers, container ships, and offshore support vessels to connect probes on marine diesel engines (mounted on engine blocks) to conditioners in the ship’s control room. The saltwater-resistant jacket and IP68 connectors withstand marine environments, while flame retardancy complies with shipboard safety standards. The 40-foot length simplifies routing through tight engine room spaces, ensuring reliable monitoring of crankshaft vibration (detecting bearing wear) and axial displacement (preventing coupling damage).
• Steel & Metallurgical Industry (Rolling Mills):
  • Used in steel mills to connect probes on hot rolling mill drives (mounted on mill frames) to conditioners in control rooms 30–40 feet away. The cable’s high-temperature tolerance (+125°C) resists heat from hot rolling operations, while EMI shielding rejects interference from mill motors and power cables. Abrasion resistance prevents damage from steel scrap, ensuring accurate measurement of roll vibration (maintaining steel sheet thickness and quality).